Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Roman, Jose E."'
Autor:
Nicolet, André, Demésy, Guillaume, Zolla, Frédéric, Campos, Carmen, Roman, Jose E., Geuzaine, Christophe
Publikováno v:
European Journal of Mechanics - A/Solids, Volume 100, July-August 2023, 104809
Resonances, also known as quasi normal modes (QNM) in the non-Hermitian case, play an ubiquitous role in all domains of physics ruled by wave phenomena, notably in continuum mechanics, acoustics, electrodynamics, and quantum theory. In this paper, we
Externí odkaz:
http://arxiv.org/abs/2410.03631
In this work, the infinite GMRES algorithm, recently proposed by Correnty et al., is employed in contour integral-based nonlinear eigensolvers, avoiding the computation of costly factorizations at each quadrature node to solve the linear systems effi
Externí odkaz:
http://arxiv.org/abs/2403.19309
Autor:
Pino, Manuel, Roman, Jose E.
We analyze the ergodic properties of a metallic wavefunction for the Anderson model in a disordered random-regular graph with branching number $k=2.$ A few q-moments $I_q$ associated with the zero energy eigenvector are numerically computed up to siz
Externí odkaz:
http://arxiv.org/abs/2311.07690
Autor:
Hiremath, Varun, Roman, Jose E.
Publikováno v:
Applied Mathematics and Computation 458, 128249, 2023
Closed combustion devices like gas turbines and rockets are prone to thermoacoustic instabilities. Design engineers in the industry need tools to accurately identify and remove instabilities early in the design cycle. Many different approaches have b
Externí odkaz:
http://arxiv.org/abs/2208.08717
The computation of the partial generalized singular value decomposition (GSVD) of large-scale matrix pairs can be approached by means of iterative methods based on expanding subspaces, particularly Krylov subspaces. We consider the joint Lanczos bidi
Externí odkaz:
http://arxiv.org/abs/2206.03768
Publikováno v:
In Journal of Computational and Applied Mathematics April 2024 440
In this paper, a Parallel Direct Eigensolver for Sequences of Hermitian Eigenvalue Problems with no tridiagonalization is proposed, denoted by \texttt{PDESHEP}, and it combines direct methods with iterative methods. \texttt{PDESHEP} first reduces a H
Externí odkaz:
http://arxiv.org/abs/2012.00506
Publikováno v:
IEEE Transactions on Parallel and Distributed Systems 32 (2021) 367-378
In this paper, a parallel structured divide-and-conquer (PSDC) eigensolver is proposed for symmetric tridiagonal matrices based on ScaLAPACK and a parallel structured matrix multiplication algorithm, called PSMMA. Computing the eigenvectors via matri
Externí odkaz:
http://arxiv.org/abs/2008.01990
Autor:
Yu, Victor Wen-zhe, Campos, Carmen, Dawson, William, García, Alberto, Havu, Ville, Hourahine, Ben, Huhn, William P, Jacquelin, Mathias, Jia, Weile, Keçeli, Murat, Laasner, Raul, Li, Yingzhou, Lin, Lin, Lu, Jianfeng, Moussa, Jonathan, Roman, Jose E, Vázquez-Mayagoitia, Álvaro, Yang, Chao, Blum, Volker
Publikováno v:
Computer Physics Communications 256 (2020) 107459
Routine applications of electronic structure theory to molecules and periodic systems need to compute the electron density from given Hamiltonian and, in case of non-orthogonal basis sets, overlap matrices. System sizes can range from few to thousand
Externí odkaz:
http://arxiv.org/abs/1912.13403
Autor:
Hiremath, Varun, Roman, Jose E.
Publikováno v:
In Applied Mathematics and Computation 1 December 2023 458